Obviously sound can travel through space; Voyager 1 has received interstellar sounds

Maybe someone will 'pretend' they hear it. By the way, what's a tree doing in a complete vacuum anyway?

 

Interesting on the P-wave...

In space, sound can travel only as related to gas, dust or particles in the space. If it is a complete vacuum, or near vacuum, sound will not travel. I wonder if two people were three feet apart in space, with no space suits, and one of them released a mist of water vapor towards the other person, while at the same time saying something, would the other person then hear it?

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It's one of those non-air ferns...

 

YOUR RIGHT!!!

WORD PROBLEMS!!!

If students started OUT learning how to calculate and solve problems in FIRST GRADE....they would get used to putting a practical application FACE upon Mathematics.

Here is an easy word problem to solve but because of the manner in which basic ALGEBRA is not taught at an early age....I took basic Algebra in 5th grade....I should have been exposed to a little bit of Algebra in 1st grade...more in 2nd grade and so on....and some members have told me they did not take Algebra until they were in HIGH SCHOOL!!!

That is far too late!!!

OK...two guys are painting a house.

One guy...Guy A....or A...can paint the entire house by himself in 24 hours.

The other guy...Guy B...or B....can paint the entire house in 12 hours.

If BOTH Guy A and Guy B....start painting the house at the same time....how many hours will it take for BOTH of them to completely paint the house?

THIS IS EASY!!!

Those who know this basic Algebra Method of calculation PLEASE....DO NOT GIVE THE ANSWER AWAY!!!

For those who do not understand how to calculate it...and I used REALLY easy numbers....DO NOT BE ASHAMED YOU CAN'T FIGURE IT OUT!!!!

Please post in and those of us who know this method will PM you how to do it.

NO ONE OPENLY POST THE ANSWER OR HOW TO CALCULATE IT!!! Please.

AboveAlpha

 

Getting smart with the math again? I swear there is a special place in hell for people like you!



Oh, never mind, I figured it out... Taking your hint I will keep it a secret, for now.

 

As I recall hearing, about 1% of the static we pick up on our radios is background "noise" from the Big Bang. That noise is not sound like a voice traveling through an atmosphere, but rather a radio (a type of electromagnetic radiation) disturbance.

 

WGA....if you figured this out PM me and tell me.

AboveAlpha

 

Done and done, I told you I could do it.

Well, thanks Mom for making me watch educational instructional programing on PBS when I was growing up in homeschool!

 

You fell into a TRAP of calculation.

I explained it to you in my PM to you.

That works easily if you use easy whole numbers with a simple ratio between them to calculate.

But as I showed you in my PM....if Guy A can paint the whole house in 18.78 hours and Guy B can paint the whole house in....what did I post? 11.88 hours and both guys start paining the same house together at the same time....IT IS NOT SO EASY TO DEVELOP AND CALCULATE THE SIMPLE RATIO IN ONE'S HEAD BREAKING BOTH DOWN INTO INCREMENTS IS IT!!!??? LOL!!!

Well...at LEAST you are smart enough to see the logic in that....some peoples faces go BLANK when confronted by such beyond belief easy to calculate Algebra!!

AboveAlpha

 

The first part that I bolded actually sounds like a credible premise when I think about it.

I am wondering if the particles in energy waves, themselves, are capable of producing sound, no matter how small, in and of themselves. If sound is vibration,, could vibrating photons or electrons produce sound as well, even though it may be very, very hard to detect?

 

In a way....they do...but not in the way you think they might.

When you or I or anyone else are typing our posts we supposedly touch the key's on our computers keyboard and as a person does this and depending upon how hard they type and how hard their finger tips are....a person will hear sound varying in volume and pitch.

The impact of our finger tips upon the keys and other factors one specifically being F=MA....or Force equals Mass x Acceleration.

Thus the faster and more massive your finger tips and the force you apply in typing from the mechanics of the rest of your body determines how much Kinetic Energy or Force will be transfered from your impacting finger tips to the keys.

When this happens the result is a Kinetic Energy Rebound and Kinetic Force CASCADE that not only effects the keys but the desk or table or your lap and through your body and through the floor and essentially EVEN EFFECTS THE ENTIRE PLANET....as little as that might be an effect.

But it also EFFECTS THE AIR....or water if you happen to be typing underwater.

The Air or Water is made of Atoms and in Air's case...besides a few trace Elements....it is about 20% Oxygen and 80% Nitrogen Gases.

Now these Atoms of primarily Oxygen and Nitrogen in Air have surrounding each of their Atomic Nucleuses of Protons and Neutrons ELECTRON ORBITAL FIELDS.

There is always the same number of Electrons which are Negatively Charged Quantum Particle/Wave Forms....as their are Protons which are HADRONS.....and all Hadrons are COMPLETELY COMPRISED OF QUANTUM PARTICLE/WAVE FORMS such as Quarks, Gluons, Mesons...etc.

The Electrons in Orbital Fields around the Atomic Nucleus exist in numbers of varying Orbits which have specific numbers determining if certain orbits are FULL or not and this allows for things like Chemical Reactions, Magnetism...etc.

BUT HERE IS THE DEAL!!!

When your Finger Tips touch the Keys....THEY NEVER ACTUALLY TOUCH THOSE KEYS!!!

WHY???

Because the Atoms that make up your Fingers and the Atoms that make up the keys on the keyboard and the air and the desk or table and the floor and the houses foundation and the Earth.....ALL THOSE ATOMS NEVER EVER ACTUALLY COME IN CONTACT WITH EACH OTHER!!!!


The thing is....Electrons are Negatively Charged and as all Matter has Atoms with surrounding Electrons the Negatively charged Electrons REPEL other Electrons.

Thus...they never touch.

AboveAlpha

 

Scientists have converted magnetic, light or radio signals into audio.
A way to let you hear how space 'sounds'. About the same trick as a bat detector, it's a frequency converter. Sound needs a dense enough medium (air, water, steel) and audio cannot travel long distances, and it is slow compared to light speed.

 

Yeah but SOUND can be FELT as well as a deaf person standing in front of some 18 inch speakers kicking out 80 cycles to 400 cycles.....FEELS the sound.

AboveAlpha

 

I had a feeling I was going to be wrong somehow.

What is this? AboveAlpha the ornery math teacher?

No it's good it's all good. I had to think about what you showed me, try to visualize it, what the math all means as a blob. It blew my mind.

 

It has been a day so I will post the solve.

The Algebra being used here is A x B / A + B.

Thus two guys one can paint the home in 24 hours the other in 12 hours.

Thus 24 x 12 = 288 or A x B.....over 24 + 12 = 36

Thus 288 divided by 36 = 8.

Both men together can pain the house in 8 hours.

AboveAlpha

 

I didn't think of it like that. Guy A paints 1 house per 24 hours (1/24). Guy B paints 1 house per 12 hours (1/12 or 2/24). If they work together, add the rates. That's 3 houses in 24 hours (3/24), or 1 house in 8 hours.

 

You could even read it in a further different way [it's the same, but starting from a consideration connected to sets:

This means that, as for output, Guy B is equal to 2*Guy A [B=A*2]
So that making a team composed by A & B, you obtain A + B, as for output, that is to say A+A+A [since B=A*2=A+A].

So that the output of (A+B) will be 3 times higher than that output of A.

This means that the team will need 1/3 of the time that Guy A needs to paint the house > 24/3 = 8.

If

A = 1/24
B = A*2 = A+A
A+B = 1/24 + 1/24 + 1/24 = 3/24

 

Anyway, this would imply also a different compensation for the two workers, since ...

in 8 hour Guy A will paint 1/3 of the home
in 8 hours Guy B will paint 2/3 of the home

so that 2/3 of the daily salary have to go to Guy B ...

 

Guys, you feel into the same TRAP I did trying to calculate AboveAlpha's math problem. It turns out those methods only work for the easy numbers given. Put in numbers like 11.8 or 4.6 and the nice easy methods fall apart.

Well, at least I wasn't the only one to fall for this trap.

I can't wait to see AboveAlpha's reaction to this turn of events. He's going to end up on the floor and not from laughing.

 

If not from laughing, then what? Drinking? Anyway, the other methods still work with more complicated numbers, it's just that the methods become more complicated as well. AA's formula stays simple.

 

The problem with doing it like that....and I PURPOSELY used simple easy whole numbers to TRAP people into thinking they could do it the way you describe...and you can....BUT JUST FOR THE NUMBERS I USED.

Try the same problem with Guy A painting the whole house by himself in 18.593 Hours and Guy B being able to paint the whole house in 11.76 Hours....how long would it take BOTH of them starting at the same time to paint the home TOGETHER?

Not so easy now is it? LOL!!

That's why you need to use A x B / A + B

AboveAlpha

 

Yeah....I did get a good chuckle out of others falling into the same trap as you did Wga.

At least YOU are Honorable enough to be able to admit it.

Some others.....ehhhh...not so easy for them. LOL!!

AboveAlpha

 

And folks....THAT....is why COMMUNISM goes against HUMAN NATURE!!!!

Unfortunately if you are Guy B.....you are going to be REALLY P!$$ED OFF.....when GUY A.....get's an even split of the JOBS PAY!! LOL!!!

AboveAlpha

 

Trying to figure out a non-whole numbers in the way some here figured out the answer to my Problem without using Algebra would take FOREVER AND A DAY!!!

Example.....Guy A takes 17.567 Hours to paint the whole house by himself...Guy B takes 11.0164 hours to do the same.

Now....just to try to assign a RATIO....between Guy A and Guy B....is going to take a HELL of a lot of time and would require a CALCULATOR....when a person using Algebra could simply use a piece of paper and pen and multiply A x B / A + B....and get the answer within less than 45 seconds....here....A x B = 193.5250988....and I did that in my HEAD!!!

A + B = 28.5834

So 193.5250988 / 28.5834 = and I will have to use paper and pen for this....= 6.7705416010691520253013987139389 Hours for both Guy A and Guy B to paint the house together if they started at the same time.

Now I admit it took me more than 45 seconds to figure this out on paper....took me about 1 minute and 20 seconds to do BOTH A x B / A + B.....and it took me about 20 seconds to do A x B in my head and about 7 seconds to figure out A + B in my head.

Then it took me almost a minute and I was watching by seconds hand on my watch and as it is a Divers Watch I have multiple Stop Watch Functions so I knew using Algebra and using my Head and a piece of Paper and Pen to figure this out time passed was 1 Minute 22 seconds to come up with the answer.

NOW.....just TRY....to see HOW INCREDIBLY LONG A PERIOD OF TIME....it will take to figure this out using a developed RATIO per hour for each guy and then calculate total time like Wga and 10A and others did on this problem which does NOT give you easy whole numbers and a simplistic ratio of one guy being able to paint the house 2 times as fast as the other guy in the same period.

5 of 11.....Fifth of November....said...and I QUOTE..."Anyway, the other methods still work with more complicated numbers, it's just that the methods become more complicated as well.".....5 of 11.

5 of 11.....it is almost IMPOSSIBLE for any person....even RAIN MAN....to within any viable amount of time passing....calculate the ratio's and solve this problem without using ALGEBRA.

AboveAlpha

 

Just to add.....LOL!! I made a funny. LOL!! Just to add...ha..ha...anyways....just to add.....I could have easily rounded up or down the numbers and even done the DIVISION in my HEAD as if this same Algebra was used to figure out PAY....to see how much each guy would get because one guy who is hired is an experienced PRO....and the other guy is someone perhaps the guy who owns the home was asked to hire by the PRO as perhaps the PRO was doing the Homeowned a favor and asked him to hire extra help....and calculations of how much time the hired hand could paint the home in as well as his ability to properly paint and not be sloppy.....................ANYWAYS.....a person who knows this Algebra can use it to quickly and EASILY figure out a lot of things in their head without using paper or pen or calculator.

AboveAlpha

 

Anyway, no problem at all, we still don't need (A + B)/(A x B).

Guy A paints at a rate of 1 house in 18.593 hours (1/18.593). Guy B paints at a rate of 1/11.76 hours (1/11.76). Like before, just add the rates a voila!

1/18.593 + 1/11.76 => 1/0.1388 = 7.2 hours. Easy peasy, just numbers are more difficult to do in your head.

This works because 1/A + 1/B = (A x B) / (A + B). Was hoping you'd recognize that....

Two can play at this game. How well does (AxB) / (A + B) work if Guy A paints a 3.5 houses in 45.7 hours, Guy B paints 2.6 houses in 43.7 hours? How long does it take to paint one house?

Using my method, 1 divided by (3.5/45.7 + 2.6/43.7) is the answer. (AxB)/(A + B) isn't as easy, you just need a few more variables.